Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

metadata-mismatch.test
; RUN: llvm-link %p/Inputs/metadata-mismatch-a.ll %p/Inputs/metadata-mismatch-b.ll -S 2>&1 | FileCheck %s

; CHECK: warning: linking module flags 'Dwarf Version': IDs have conflicting values ('i32 5' from {{.*}}/metadata-mismatch-b.ll with 'i32 4' from llvm-link)